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Psychological research is "empirical," which means we begin by observing actual behavior.

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Researchers try to keep their observations objective; we "measure" our observations.

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Observational research focuses on describing behavior.

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Correlational research measures different factors and

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helps researchers use one variable to make predictions about a second variable.

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Experimental research manipulates one factor, the independent variable,

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to see if it causes changes on another factor, the dependent variable.

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Psychological research uses many different means to try to understand behavior.